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1 // Copyright 2008 the V8 project authors. All rights reserved. | 1 // Copyright 2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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349 __ jmp(&exit_label_); | 349 __ jmp(&exit_label_); |
350 } | 350 } |
351 | 351 |
352 | 352 |
353 Handle<Object> RegExpMacroAssemblerIA32::GetCode() { | 353 Handle<Object> RegExpMacroAssemblerIA32::GetCode() { |
354 // Finalize code - write the entry point code now we know how many | 354 // Finalize code - write the entry point code now we know how many |
355 // registers we need. | 355 // registers we need. |
356 | 356 |
357 // Entry code: | 357 // Entry code: |
358 __ bind(&entry_label_); | 358 __ bind(&entry_label_); |
| 359 // Save callee-save registers. Order here should correspond to order of |
| 360 // kBackup_ebx etc. |
359 __ push(esi); | 361 __ push(esi); |
360 __ push(edi); | 362 __ push(edi); |
| 363 __ push(ebx); // Callee-save on MacOS. |
361 __ enter(Immediate(num_registers_ * kPointerSize)); | 364 __ enter(Immediate(num_registers_ * kPointerSize)); |
| 365 // Load string length. |
362 __ mov(esi, Operand(ebp, kInputEndOffset)); | 366 __ mov(esi, Operand(ebp, kInputEndOffset)); |
| 367 // Load input position. |
363 __ mov(edi, Operand(ebp, kInputStartOffset)); | 368 __ mov(edi, Operand(ebp, kInputStartOffset)); |
| 369 // Set up edi to be negative offset from string end. |
364 __ sub(edi, Operand(esi)); | 370 __ sub(edi, Operand(esi)); |
| 371 // Set up esi to be end of string. First get location. |
365 __ mov(edx, Operand(ebp, kInputBuffer)); | 372 __ mov(edx, Operand(ebp, kInputBuffer)); |
| 373 // Dereference location to get string start. |
366 __ mov(edx, Operand(edx, 0)); | 374 __ mov(edx, Operand(edx, 0)); |
| 375 // Add start to length to complete esi setup. |
367 __ add(esi, Operand(edx)); | 376 __ add(esi, Operand(edx)); |
368 if (num_saved_registers_ > 0) { | 377 if (num_saved_registers_ > 0) { |
369 // Fill saved registers with initial value = start offset - 1 | 378 // Fill saved registers with initial value = start offset - 1 |
370 __ mov(ecx, -num_saved_registers_); | 379 __ mov(ecx, -num_saved_registers_); |
371 __ mov(eax, Operand(edi)); | 380 __ mov(eax, Operand(edi)); |
372 __ sub(Operand(eax), Immediate(char_size())); | 381 __ sub(Operand(eax), Immediate(char_size())); |
373 Label init_loop; | 382 Label init_loop; |
374 __ bind(&init_loop); | 383 __ bind(&init_loop); |
375 __ mov(Operand(ebp, ecx, times_4, +0), eax); | 384 __ mov(Operand(ebp, ecx, times_4, +0), eax); |
376 __ inc(ecx); | 385 __ inc(ecx); |
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391 if (char_size() == 2) { | 400 if (char_size() == 2) { |
392 __ shr(eax); | 401 __ shr(eax); |
393 } | 402 } |
394 __ mov(Operand(ebx, i * kPointerSize), eax); | 403 __ mov(Operand(ebx, i * kPointerSize), eax); |
395 } | 404 } |
396 } | 405 } |
397 __ mov(eax, Immediate(1)); | 406 __ mov(eax, Immediate(1)); |
398 | 407 |
399 __ bind(&exit_label_); | 408 __ bind(&exit_label_); |
400 __ leave(); | 409 __ leave(); |
| 410 __ pop(ebx); |
401 __ pop(edi); | 411 __ pop(edi); |
402 __ pop(esi); | 412 __ pop(esi); |
403 __ ret(0); | 413 __ ret(0); |
404 | 414 |
405 CodeDesc code_desc; | 415 CodeDesc code_desc; |
406 masm_->GetCode(&code_desc); | 416 masm_->GetCode(&code_desc); |
407 Handle<Code> code = Factory::NewCode(code_desc, | 417 Handle<Code> code = Factory::NewCode(code_desc, |
408 NULL, | 418 NULL, |
409 Code::ComputeFlags(Code::REGEXP), | 419 Code::ComputeFlags(Code::REGEXP), |
410 self_); | 420 self_); |
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626 | 636 |
627 | 637 |
628 void RegExpMacroAssemblerIA32::LoadConstantBufferAddress(Register reg, | 638 void RegExpMacroAssemblerIA32::LoadConstantBufferAddress(Register reg, |
629 ArraySlice* buffer) { | 639 ArraySlice* buffer) { |
630 __ mov(reg, buffer->array()); | 640 __ mov(reg, buffer->array()); |
631 __ add(Operand(reg), Immediate(buffer->base_offset())); | 641 __ add(Operand(reg), Immediate(buffer->base_offset())); |
632 } | 642 } |
633 | 643 |
634 #undef __ | 644 #undef __ |
635 }} // namespace v8::internal | 645 }} // namespace v8::internal |
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